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Multiple aggregations of the same column using pandas GroupBy.agg()
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This should be the top answer because of using a more clear and clean solution using the newer version of the interface.
– NKSHELL
Oct 18 '19 at 17:40
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Why does C++ need a separate header file?
...ory just wasn't an option. A compiler had to start reading the file at the top, and then proceed linearly through the source code. The header mechanism enables this. The compiler doesn't have to consider other translation units, it just has to read the code from top to bottom.
And C++ retained this...
How to remove convexity defects in a Sudoku square?
...out below image to see their order:
So we sort them from left to right, top to bottom.
centroids = np.array(centroids,dtype = np.float32)
c = centroids.reshape((100,2))
c2 = c[np.argsort(c[:,1])]
b = np.vstack([c2[i*10:(i+1)*10][np.argsort(c2[i*10:(i+1)*10,0])] for i in xrange(10)])
bm = b.resh...
Can I run javascript before the whole page is loaded?
...hen the browser encounters a classic script tag when parsing the HTML, it stops parsing and hands over to the JavaScript interpreter, which runs the script. The parser doesn't continue until the script execution is complete (because the script might do document.write calls to output markup that the ...
Java to Clojure rewrite
... your lower level constructs are working well before you build too much on top of them
Decide how you want to use Clojure's reference types (vars, refs, agents and atoms) to manage each part mutable application-level state. They all work in a similar way but have different transactional/concurrency ...
How do I find Waldo with Mathematica?
...e feet are not too close.
The hat. Red-white any distance up to twice the top of his head. Note that it must have dark hair below, and probably glasses.
Long sleeves. red-white at some angle from the main red-white.
Dark hair.
Shoe color. I don't know the color.
Any of those could apply. Th...
Should I use JSLint or JSHint JavaScript validation? [closed]
...(myself included) may not like how it looks to put all the declarations up top, but it is a good reminder that JavaScript does not have block scope.
– Mark Evans
May 14 '13 at 19:20
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
...r;
box-shadow: 0px 1px 3px #000;
}
#close {
position: absolute;
top: 0px;
right: 0px;
width: 22px;
height: 22px;
margin: -12px;
box-shadow: 0px 1px 3px #000;
background-color: #000;
border: 2px solid #FFF;
border-radius: 22px;
color: #FFF;
text-align: center;...
How can I specify a branch/tag when adding a Git submodule?
... edited Jul 20 '19 at 14:31
Top-Master
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answered Sep 14 '13 at 2:33
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When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
... reason for its speed is something called as deferred. Twisted is built on top of deferreds. For those of you who dont know about defereds, it is the mechanism through with asynchronous architecture is achieved. Twisted is very fast. But is not suitable for writing conventional webapps. If you want ...